She always has a calm, gentle expression and is portrayed as mature and hard-working. She is not as talkative as the other girls, but this is implied to not be through choice. Monika is noted by the other characters to be smart, confident and athletic. She is believed to be the second-tallest character, behind Yuri or the protagonist.
She also wears a dark-blue skirt, black thigh-high socks, and white uwabaki slippers with a pink tip, which are in stark contrast to the rest of the cast's white knee-socks and blue-tipped slippers. She wears the typical school uniform, which is a warm gray blazer of a white-collared shirt with a brown sweater vest over it, topped off with a red ribbon. Her eyes are emerald green Act 3 shows tiny dots in what is supposed to be her colored pupils already surrounding the iris. She also has bangs and two long strands of hair next to her face. Monika has long coral brown hair that she keeps in a ponytail tied back with a large white bow. Monika is the driving force of the game, instructing the club members to practice writing poems until the club festival which itself facilitates and develops the characters and story.
Monika is the poster girl of Doki Doki Literature Club! and one of the five members and President of the Literature Club.